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FR2756410B1 - PROTECTION DEVICE AFTER WRITING A PAGE OF AN ELECTRICALLY PROGRAMMABLE MEMORY - Google Patents

PROTECTION DEVICE AFTER WRITING A PAGE OF AN ELECTRICALLY PROGRAMMABLE MEMORY

Info

Publication number
FR2756410B1
FR2756410B1 FR9614776A FR9614776A FR2756410B1 FR 2756410 B1 FR2756410 B1 FR 2756410B1 FR 9614776 A FR9614776 A FR 9614776A FR 9614776 A FR9614776 A FR 9614776A FR 2756410 B1 FR2756410 B1 FR 2756410B1
Authority
FR
France
Prior art keywords
writing
page
protection device
programmable memory
electrically programmable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9614776A
Other languages
French (fr)
Other versions
FR2756410A1 (en
Inventor
Alessandro Brigati
Bruno Leconte
Jean Devin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STMicroelectronics SA
STMicroelectronics lnc USA
Original Assignee
SGS Thomson Microelectronics SA
SGS Thomson Microelectronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SGS Thomson Microelectronics SA, SGS Thomson Microelectronics Inc filed Critical SGS Thomson Microelectronics SA
Priority to FR9614776A priority Critical patent/FR2756410B1/en
Priority to EP97470027A priority patent/EP0845787B1/en
Priority to DE69700381T priority patent/DE69700381T2/en
Priority to US08/970,445 priority patent/US5862075A/en
Publication of FR2756410A1 publication Critical patent/FR2756410A1/en
Application granted granted Critical
Publication of FR2756410B1 publication Critical patent/FR2756410B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C16/00—Erasable programmable read-only memories
    • G11C16/02—Erasable programmable read-only memories electrically programmable
    • G11C16/06—Auxiliary circuits, e.g. for writing into memory
    • G11C16/22—Safety or protection circuits preventing unauthorised or accidental access to memory cells
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C16/00—Erasable programmable read-only memories
    • G11C16/02—Erasable programmable read-only memories electrically programmable
    • G11C16/06—Auxiliary circuits, e.g. for writing into memory
    • G11C16/10—Programming or data input circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Storage Device Security (AREA)
  • Read Only Memory (AREA)
FR9614776A 1996-11-28 1996-11-28 PROTECTION DEVICE AFTER WRITING A PAGE OF AN ELECTRICALLY PROGRAMMABLE MEMORY Expired - Fee Related FR2756410B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR9614776A FR2756410B1 (en) 1996-11-28 1996-11-28 PROTECTION DEVICE AFTER WRITING A PAGE OF AN ELECTRICALLY PROGRAMMABLE MEMORY
EP97470027A EP0845787B1 (en) 1996-11-28 1997-11-05 Device to protect electrically programmable memory after page writing
DE69700381T DE69700381T2 (en) 1996-11-28 1997-11-05 Device for protecting an electrically programmable memory after page-by-page writing
US08/970,445 US5862075A (en) 1996-11-28 1997-11-14 Device for protection after a page-write operation in an electrically programmable memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9614776A FR2756410B1 (en) 1996-11-28 1996-11-28 PROTECTION DEVICE AFTER WRITING A PAGE OF AN ELECTRICALLY PROGRAMMABLE MEMORY

Publications (2)

Publication Number Publication Date
FR2756410A1 FR2756410A1 (en) 1998-05-29
FR2756410B1 true FR2756410B1 (en) 1999-01-15

Family

ID=9498251

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9614776A Expired - Fee Related FR2756410B1 (en) 1996-11-28 1996-11-28 PROTECTION DEVICE AFTER WRITING A PAGE OF AN ELECTRICALLY PROGRAMMABLE MEMORY

Country Status (4)

Country Link
US (1) US5862075A (en)
EP (1) EP0845787B1 (en)
DE (1) DE69700381T2 (en)
FR (1) FR2756410B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2770327B1 (en) * 1997-10-24 2000-01-14 Sgs Thomson Microelectronics ELECTRICALLY PROGRAMMABLE AND ERASABLE NON-VOLATILE MEMORY INCLUDING A PROTECTIVE AREA FOR READING AND / OR WRITING AND ELECTRONIC SYSTEM INCORPORATING THE SAME
US5974500A (en) * 1997-11-14 1999-10-26 Atmel Corporation Memory device having programmable access protection and method of operating the same
FR2771839B1 (en) * 1997-11-28 2000-01-28 Sgs Thomson Microelectronics PROGRAMMABLE AND ELECTRICALLY ERASABLE NON-VOLATILE MEMORY
FR2803080A1 (en) * 1999-12-22 2001-06-29 St Microelectronics Sa PAGE-BY-PAGE PROGRAMMABLE FLASH MEMORY
CN101095277A (en) * 2004-03-12 2007-12-26 斯里国际 Mechanical meta-materials

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2608803B1 (en) * 1986-12-19 1991-10-25 Eurotechnique Sa DEVICE FOR PROTECTING AN ERASABLE AND REPROGRAMMABLE DEAD MEMORY
JPH0812646B2 (en) * 1989-03-03 1996-02-07 三菱電機株式会社 Semiconductor integrated circuit
US5363330A (en) * 1991-01-28 1994-11-08 Mitsubishi Denki Kabushiki Kaisha Non-volatile semiconductor memory device incorporating data latch and address counter for page mode programming
US5363334A (en) * 1993-04-10 1994-11-08 Microchip Technology Incorporated Write protection security for memory device
KR0169267B1 (en) * 1993-09-21 1999-02-01 사토 후미오 Nonvolatile Semiconductor Memory
US5621692A (en) * 1994-05-24 1997-04-15 Winbond Electronics Corporation Memory device with page select capability
US5526320A (en) * 1994-12-23 1996-06-11 Micron Technology Inc. Burst EDO memory device

Also Published As

Publication number Publication date
DE69700381D1 (en) 1999-09-09
EP0845787B1 (en) 1999-08-04
US5862075A (en) 1999-01-19
DE69700381T2 (en) 1999-11-25
EP0845787A1 (en) 1998-06-03
FR2756410A1 (en) 1998-05-29

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Legal Events

Date Code Title Description
ST Notification of lapse